Author Topic: 6 stage optical phaser project  (Read 4498 times)

jubal81

  • Electron Doctor
  • *****
  • Posts: 3282
  • Jason - Evergreen St.
    • View Profile
6 stage optical phaser project
« on: July 14, 2012, 01:50:46 AM »
I was surfing around and came across the sweetest phaser sound I've heard. The project is pretty well documented, but it's broken up over three pages and the author isn't a native English speaker, which makes it pretty confusing since I don't know much of anything about phasers to begin with.

Here's the link to the first page:
http://www.aleph.co.jp/~takeda/radio/phaser/index3E.html

Here's a link to the demo:
http://www.aleph.co.jp/~takeda/radio/mp3/ps-guitar.mp3
"If you put all the knobs on your amplifier on 10 you can get a much higher reaction-to-effort ratio with an electric guitar than you can with an acoustic."
- David Fair

jubal81

  • Electron Doctor
  • *****
  • Posts: 3282
  • Jason - Evergreen St.
    • View Profile
Re: 6 stage optical phaser project
« Reply #1 on: July 14, 2012, 01:54:28 AM »
Here's the LFO section:



Here's the main circuit:




And the thing:

"If you put all the knobs on your amplifier on 10 you can get a much higher reaction-to-effort ratio with an electric guitar than you can with an acoustic."
- David Fair

nzCdog

  • Electron Doctor
  • *****
  • Posts: 3754
  • Corey - Christchurch, NZ
    • View Profile
    • Soundcloud
Re: 6 stage optical phaser project
« Reply #2 on: July 14, 2012, 02:50:31 AM »
'yoi yoi yoi'... demo sounds pretty darn good :o
just need a 1590A layout ;)

alanp

  • Electron Doctor
  • *****
  • Posts: 5216
    • View Profile
    • http://alanp.info/
Re: 6 stage optical phaser project
« Reply #3 on: July 14, 2012, 05:16:06 AM »
What I like best about this is that it looks like you don't need LM13600 (aka awful to find from an e-tailer that is NOT ebay) or matched FETs (aka have fun with the bagful of FETs that don't match up!)
"Hot water, good dentishtry and shoft lavatory paper."
- Cohen the Barbarian, on what is greatest in life
My OSHpark shared projects
My website

jimijam

  • Solder Ninja
  • ****
  • Posts: 235
    • View Profile
Re: 6 stage optical phaser project
« Reply #4 on: July 14, 2012, 07:08:25 AM »
136000s are 89cents at smallbear. i just got 20 of em.
tried lifting weights once....they were too heavy!